Supply high-quality Q620D high-strength plate and various types of high-strength steel plate

材质：

高强度结构钢板

规格：

常规齐全

品牌：

国产进口

Steel plate is a flat steel material that is poured with molten steel and pressed after cooling.
Steel plates are flat and rectangular, and can be directly rolled or cut from wide steel strips.
Steel plates are divided according to thickness, thin steel plates are millimeters and the thinnest are millimeters, thick steel plates are ~mm, and extra-thick steel plates are ~mm.
Steel plates are divided into hot rolling and cold rolling.
The width of the thin plate is ~mm and the width of the thickness is ~mm. The thin plates are divided by steel type, including ordinary steel, high-quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel and industrial pure iron thin plates, etc. According to professional use, there are plates for oil drums, enamel plates, bullet-proof plates, etc. Coatings include galvanized sheets, tin-plated sheets, lead-plated sheets, plastic composite steel sheets, etc.
Usage: It is mainly used to manufacture large steel structures for bridges, ships, vehicles, boilers, high-pressure vessels, oil and gas pipelines, etc.
Performance requirements. High strength generally has a yield strength above.
High toughness requires an elongation of ~, and room temperature impact toughness greater than /~/. For large welded components, higher fracture toughness is also required.
Good welding performance and cold forming performance.
Low cold-brittle transition temperature.
Good corrosion resistance.
Ingredient characteristics. Due to the high requirements of toughness weldability and cold forming performance, the carbon content of low carbon should not exceed.
Add alloying elements mainly manganese.
Adding a small amount of niobium, titanium or vanadium and other auxiliary elements to form fine carbides or carbonitrides in the steel is beneficial to obtaining fine ferrite grains and improving the strength and toughness of the steel. In addition, adding a small amount of copper and phosphorus can improve the corrosion resistance. Adding a small amount of rare earth elements can desulfurize and degas, purify steel, and improve toughness and process performance.
Heat treatment characteristics This type of steel is generally used in a hot-rolled air-cooled state and does not require special heat treatment.
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